Thread gauge



FIG. 1 is a perspective view of the thread gauge of this invention.

FIG. 2 is another perspective view of the thread gauge shown in FIG. 1.

FIG. 3 is an end view of the thread gauge shown in FIG. 1; and,

FIG. 4 is a side elevation view of the thread gauge shown in FIG. 1. 

The ornamental design for thread gauge, as shown and described. 